socks5systemz | ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6

General

Target

ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe
Size

5.8MB
MD5

a3d0679e753a8c0beb83c6ae5bfa7761
SHA1

a1c26b33cb1d5d95e0ce7c8676803137ec06bcf4
SHA256

ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6
SHA512

d8ed89311fcb8d4280725e3cef3f8fa951ecc20685dcefb29a72751006e9106753f9231c22cfb2187ef4c2dc07144c45f9435ddcd835f01a77ab8de28d85070e
SSDEEP

98304:4ZofLV4PuWmOVkMhmhbDsovqo4a/DHYbbTfusQn5gaujWbVbhivvIBCDs:i22PTVkthbDsvsYbPfO5DujKhwgBP

Score

10^/10

Malware Config

Signatures

Detect Socks5Systemz Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4340-104-0x0000000000A00000-0x0000000000AA2000-memory.dmp	family_socks5systemz

Socks5Systemz
Socks5Systemz is a botnet written in C++.
botnet socks5systemz
Socks5systemz family
socks5systemz

Executes dropped EXE 2 IoCs

pid	Process
4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp
4340	cutmovie.exe

Loads dropped DLL 1 IoCs

pid	Process
4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp

Unexpected DNS network traffic destination 1 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	141.98.234.31

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cutmovie.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp
4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 4840	3948	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe	83
PID 3948 wrote to memory of 4840	3948	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe	83
PID 3948 wrote to memory of 4840	3948	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe	83
PID 4840 wrote to memory of 4472	4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp	87
PID 4840 wrote to memory of 4472	4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp	87
PID 4840 wrote to memory of 4472	4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp	87
PID 4840 wrote to memory of 4340	4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp	89
PID 4840 wrote to memory of 4340	4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp	89
PID 4840 wrote to memory of 4340	4840	ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp	89
PID 4472 wrote to memory of 232	4472	net.exe	90
PID 4472 wrote to memory of 232	4472	net.exe	90
PID 4472 wrote to memory of 232	4472	net.exe	90

C:\Users\Admin\AppData\Local\Temp\ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe
"C:\Users\Admin\AppData\Local\Temp\ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Users\Admin\AppData\Local\Temp\is-1I314.tmp\ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-1I314.tmp\ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp" /SL5="$4017A,5876687,56832,C:\Users\Admin\AppData\Local\Temp\ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\SysWOW64\net.exe
    "C:\Windows\system32\net.exe" pause cut_movie_1172
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4472
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 pause cut_movie_1172
      4⤵
      System Location Discovery: System Language Discovery
      PID:232
- - C:\Users\Admin\AppData\Local\Cut Movie 2021.1.02\cutmovie.exe
    "C:\Users\Admin\AppData\Local\Cut Movie 2021.1.02\cutmovie.exe" -i
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Cut Movie 2021.1.02\cutmovie.exe

Filesize
3.8MB

MD5
ed1de85d9af8639e2cafa838d099b156

SHA1
5931522eb7eb6c0751b55990eda46e053c06d56b

SHA256
4ab6a1fbde1265d7cef487c1b20765acc6f96a99216672d334afca096de1a7e9

SHA512
85f70d3eae7338120be91d866bed0285fd938f0078cb248f36baf079ebb12ff7ec620165ce0fb211484f310bc1f0ebf8997643e7cadac86eb4bc7009b2a016af

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-1I314.tmp\ef6711f016a873cd6f9911c5d57544e3f512d4d86f3028dae67dbea62ecac2f6.tmp

Filesize
692KB

MD5
5440f518699bf395a107aabf9b0fd58e

SHA1
01f61c004f9e5ab639d29cc72535e9b6c38f8f7f

SHA256
7bb588d298f5c00222b6dade079c78e7e1dda9df796d53e84eeadacfca2de967

SHA512
c56a590b858a2cc8cc9012540bfe1021d5a360a1c83eb13ea4f63b53878dcb4d7f95e0e43b0e6e7d3c9b21293fad2866581b29ef1296494b8f5eafa116bc1fdb

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-CH7BT.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
memory/3948-85-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3948-2-0x0000000000401000-0x000000000040B000-memory.dmp

Filesize
40KB

Download
memory/3948-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4340-94-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-104-0x0000000000A00000-0x0000000000AA2000-memory.dmp

Filesize
648KB

Download
memory/4340-82-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-134-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-80-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-87-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-88-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-91-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-131-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-97-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-100-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-83-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-105-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-111-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-114-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-115-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-118-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-121-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-124-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4340-127-0x0000000000400000-0x00000000007CA000-memory.dmp

Filesize
3.8MB

Download
memory/4840-6-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4840-84-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

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